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2.

A word that means the opposite of another word.

For example, "hot" is the antonym of "cold."
by Jafje September 11, 2007
 
1.
A word that has an opposite meaning to another word.
Jeer is the antonym of ovation.
by LRS November 16, 2004
 
3.
Means the same as opposite. Antonym and opposite are both synonyms.
Dangerous and safe are both antynoms. Antonym!
by lalala12271 May 01, 2008
 
4.
used when you are talking about your aunt and the people she lives or hangs around with
man 1: yo dawg, who we gonna go see tonight?

man 2: ohh, we gonna go to my antonym's house
by Teo February 27, 2004